Polymer Nanocomposites: These integrate nanoparticles into a polymer matrix, resulting in materials with improved mechanical and thermal properties. Metal Matrix Nanocomposites: These involve the dispersion of nanometer-sized particles within a metallic matrix, enhancing properties such as strength and wear resistance. Ceramic Matrix Nanocomposites: These are made by incorporating nanoparticles into a ceramic matrix, which can improve toughness and thermal stability.